.panel-enter {
  opacity: .1;
  transform: translateX(-100%);
}

.panel-enter-active {
  opacity: 1;
  transform: translateX(0%);
  transition: opacity 2000ms, transform 2000ms;
}

.panel-enter-done {
  opacity: 1;
}

.panel-exit {
  opacity: 1;
  transform: translateX(0%);
}

.panel-exit-active {
  opacity: .1;
  transform: translateX(100%);
  transition: opacity 2000ms, transform 2000ms;
}

.panel-exit-done {
  opacity: .1;
}